Happijac Blowing Fuses
Blowing fuse for left rear jack. Found some old posts and a couple of things to try (removing motor, blowing it out and re-oiling bearing seems to be the best solution short of replacing the motor). ...
Forum Discussion
You have to cover the jack heads during storage and once a year oil the electric motor bearings each year.
The small hole at the bottom of the electric motor cover is to help removal with 25 lbs of compressed air with a rubber tip nozzle it slides right off.
With the covers off you can squirt oil in the very small oiling holes at the bottom of each motor. Use enough so that you fill up the bearing cup/ recess in metal housing in the middle bottom. Excess oil won't hurt but I wouldn't flood it.
After a couple years doing this you may find the plastic white cover is falling off on hot summer days so you'll have to add one automotive screw clamp to each cover and tighten down.
Your motor bearing is frozen creating too much load on the electric system. Might need to replace the bad motor.
Also the fuse sizes are too big to provide any real protection to the circuit board.
The small hole at the bottom of the electric motor cover is to help removal with 25 lbs of compressed air with a rubber tip nozzle it slides right off.
With the covers off you can squirt oil in the very small oiling holes at the bottom of each motor. Use enough so that you fill up the bearing cup/ recess in metal housing in the middle bottom. Excess oil won't hurt but I wouldn't flood it.
After a couple years doing this you may find the plastic white cover is falling off on hot summer days so you'll have to add one automotive screw clamp to each cover and tighten down.
Your motor bearing is frozen creating too much load on the electric system. Might need to replace the bad motor.
Also the fuse sizes are too big to provide any real protection to the circuit board.
